12643482215201 has 18 divisors (see below), whose sum is σ = 14175063467190. Its totient is φ = 11273445349632.

The previous prime is 12643482215191. The next prime is 12643482215249. The reversal of 12643482215201 is 10251228434621.

It can be written as a sum of positive squares in 3 ways, for example, as 1738455435025 + 10905026780176 = 1318505^2 + 3302276^2 .

It is not a de Polignac number, because 12643482215201 - 2⁶ = 12643482215137 is a prime.

It is a super-2 number, since 2×12643482215201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12643482215401) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 60489956 + ... + 60698613.

It is an arithmetic number, because the mean of its divisors is an integer number (787503525955).

Almost surely, 2^{12643482215201} is an apocalyptic number.

It is an amenable number.

12643482215201 is a deficient number, since it is larger than the sum of its proper divisors (1531581251989).

12643482215201 is a wasteful number, since it uses less digits than its factorization.

12643482215201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121188641 (or 121188605 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 12643482215201 in words is "twelve trillion, six hundred forty-three billion, four hundred eighty-two million, two hundred fifteen thousand, two hundred one".